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Issue 27, 2017
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Magnetic field-induced enhancement of the nitrogen-vacancy fluorescence quantum yield

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Abstract

The nitrogen-vacancy (NV) centre in diamond is a unique optical defect that is used in many applications today and methods to enhance its fluorescence brightness are highly sought after. We observed experimentally an enhancement of the NV quantum yield by up to 7% in bulk diamond caused by an external magnetic field relative to the field-free case. This observation is rationalised phenomenologically in terms of a magnetic field dependence of the NV excited state triplet-to-singlet transition rate. The theoretical model is in good qualitative agreement with the experimental results at low excitation intensities. Our results significantly contribute to our fundamental understanding of the photophysical properties of the NV defect in diamond.

Graphical abstract: Magnetic field-induced enhancement of the nitrogen-vacancy fluorescence quantum yield

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Publication details

The article was received on 24 Mar 2017, accepted on 22 Jun 2017 and first published on 03 Jul 2017


Article type: Communication
DOI: 10.1039/C7NR02093G
Citation: Nanoscale, 2017,9, 9299-9304
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    Magnetic field-induced enhancement of the nitrogen-vacancy fluorescence quantum yield

    M. Capelli, P. Reineck, D. W. M. Lau, A. Orth, J. Jeske, M. W. Doherty, T. Ohshima, A. D. Greentree and B. C. Gibson, Nanoscale, 2017, 9, 9299
    DOI: 10.1039/C7NR02093G

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